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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 786 · 40 sums
TalentJR

The method (90, 180, equal): Complement of a = 90 − a. Supplement of a = 180 − a. Lines crossing: vertically opposite angles are equal; a linear pair adds up to 180°. Parallel lines: corresponding angles equal, alternate interior angles equal, interior angles on the same side add up to 180°. One angle d° more than the other: bigger = (total + d) ÷ 2.

NameDateTime takenScore ___ / 40
  1. 1.Are 10° and 170° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  2. 2.Two straight lines cross each other. One of the angles formed is 153°. What is the angle next to it on the same line (in degrees)?
  3. 3.What is the supplement of 96° (in degrees)?
  4. 4.Are 51° and 129° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  5. 5.Two angles are supplementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  6. 6.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
  7. 7.What is the complement of 14° (in degrees)?
  8. 8.What is the supplement of 144° (in degrees)?
  9. 9.What is the complement of 48° (in degrees)?
  10. 10.What is the supplement of 107° (in degrees)?
  11. 11.Are 17° and 163° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  12. 12.Two straight lines cross each other. One of the angles formed is 160°. What is the angle next to it on the same line (in degrees)?
  13. 13.What is the supplement of 10° (in degrees)?
  14. 14.Two angles are supplementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  15. 15.What is the supplement of 86° (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One angle is 130°. What is its corresponding angle (in degrees)?
  17. 17.Two angles are supplementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  18. 18.What is the complement of 61° (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 146°. What is the angle vertically opposite to it (in degrees)?
  20. 20.What is the complement of 13° (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One angle is 34°. What is its corresponding angle (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 94°. What is the angle next to it on the same line (in degrees)?
  23. 23.What is the supplement of 127° (in degrees)?
  24. 24.Are 57° and 75° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  25. 25.Two straight lines cross each other. One of the angles formed is 59°. What is the angle next to it on the same line (in degrees)?
  26. 26.Are 24° and 66° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  27. 27.Are 41° and 74° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  28. 28.Are 55° and 35° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  29. 29.What is the complement of 11° (in degrees)?
  30. 30.What is the supplement of 175° (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 117°. What is the angle next to it on the same line (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 80°. What is the angle next to it on the same line (in degrees)?
  33. 33.Are 47° and 38° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  34. 34.Two angles are supplementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the complement of 18° (in degrees)?
  36. 36.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  37. 37.What is the complement of 73° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 143°. What is the angle next to it on the same line (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One angle is 113°. What is its corresponding angle (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 123°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. Supplementary
  2. 27
  3. 84
  4. Supplementary
  5. 99
  6. 154
  7. 76
  8. 36
  9. 42
  10. 73
  11. Supplementary
  12. 20
  13. 170
  14. 123
  15. 94
  16. 130
  17. 110
  18. 29
  19. 146
  20. 77
  21. 34
  22. 86
  23. 53
  24. Neither
  25. 121
  26. Complementary
  27. Neither
  28. Complementary
  29. 79
  30. 5
  31. 63
  32. 100
  33. Neither
  34. 93
  35. 72
  36. 69
  37. 17
  38. 37
  39. 113
  40. 123

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